R A N C H O C U C A M O N G A P U B L I C L I B R A R Y STEM Education: Electricity Rancho Cucamonga Library Services Wess Garcia Programming Librarian

R A N C H O C U C A M O N G A P U B L I C L I B R A R Y STEM Education : Electrical Engineering Workshop Science, Technology, Engineering and Mathematics Back to Basics Overview STEM Workshop Thursday, October 30th 5:00-6:00pm Paul A. Biane Library Story Theater STEM Education : Electrical Engineering Science, Technology, Engineering and Mathematics Spooky Circuit Skeletons Switches Resistors Circuits LED Tuesday, October 28th 4:00-5:00pm Paul Biane Library, Story Theater

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Common Core K-3 Core Standards RI.2.10 By the end of year, read and comprehend informational texts, including history/social studies, science, and technical texts, in the grades 2-3 text complexity band proficiently, with scaffolding as needed at the high end of the range. 1-PS4-3. Plan and conduct an investigation to determine the effect of placing objects made with different materials in the path of a beam of light. 2-PS1-1. Plan and conduct an investigation to describe and classify different kinds of materials by their observable properties. K-2-ETS1-1. Ask questions, make observations, and gather information about a situation people want to change to define a simple problem that can be solved through the development of a new or improved object or tool. K-2-ETS1-2. Develop a simple sketch, drawing, or physical model to illustrate how the shape of an object helps it function as needed to solve a given problem. K-2-ETS1-3. Analyze data from tests of two objects designed to solve the same problem to compare the strengths and weaknesses of how each performs.

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1 x LED 3.6 volts / 20mA X 2 LED = 7.2 volts & 9 Volts 1 x Battery 9 volts volt LED 1.8 excess voltage

R A N C H O C U C A M O N G A P U B L I C L I B R A R Y V = I x R OR V / I = R V / I = R 1.8 V / 0.02 = 90 Ω (Ohms) (excess) (20mA) Resistor (1/8, 100 Ω (Ohms) 1 mA = AMP (short for amperes) [1 AMP/1000 =.001 mA] Ohm’s Law 1 x LED 3.6 volts / 20mA X 2 LED = 7.2 volts 1 x Battery 9 volts volt LED =1.8 excess voltage

R A N C H O C U C A M O N G A P U B L I C L I B R A R Y Positive Negative Center Anode Cathode Any side Resistor Heat Shrink Twist

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